Hey everyone. Just wanted to hear your feedback and opinions on it. All in 5w20 Pennzoil Platinum, Quaker state Ultimate duribility, or Valvoline syn power I have a 2011 Mustang GT (5.0). Was on the motorcraft snyn blend until last oil change and had got Castrol Edge (black bottle before titanium) put in. Like using full syn. The car is my daily. I drive a mixture of sometimes caught in stop and go Cali traffic to just freeway to short gas station trips I will be commuting more for school coming up and wanted to make sure I choose a good syn ( I know that they all meet or "exceed " the specs for my car by Ford ). Just wanted to get feedback from actual users of the products and not the standard consumer adds. Thanks for the time and help